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Thread: CYGN-B

  1. #371
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    Mar 2010
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    There are some materials I received from Brian a while back that I haven't posted photos or questions regarding yet. One being a library of original show EPROMS, from which the DOGN and dogloid 6502 code was previously recovered. I assume that is the main item of interest in these chips, but I could be wrong. I'm posting a photo of the Inside Laserium Monitor chips. Comments on what this is or suggestions to recover other EPROM sections welcome.

    It would be neat to recover that original Laserium logo which appears in the picture Ron posted. Suggestion for which chip to look for it on welcome.

    I'm posting photos of the three rare chips needed for the Audio Mod board, which I have all the parts for now. The 8 pin one came courtesy of Brian.

    I'm posting a block diagram of how I currently envision a system that could be used to perform live shows that could make use of as much of the clever Laserium technology and choreography as possible. I'm considering the USB device shown to provide the A & D control signals. Next week I'll have time to contact the supplier with questions, but it seems the max sample per second rate is 100 s/S. (Not 100k s/S. that device only has 4 16 bit 100kHz channels.) but 100 s/S is good for the A & D control signals.
    Attached Thumbnails Attached Thumbnails usb_signal_source.jpg  

    AudioMod2.jpg  

    AudioMod3.jpg  

    system_block.png  

    EPROM.jpg  

    AudioMod1.jpg  


  2. #372
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    Jun 2009
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    The original Laserium logo was done by the DOG card. The points were done on graph paper and input by hand. It probably wouldn't look very good on feedback scanners, since the ring on the retrace was part of its charm. I think the points are in the dog card documentation in hex. I'll check...
    "There are painters who transform the sun into a yellow spot, but there are others who, with the help of their art and their intelligence, transform a yellow spot into the sun." Pablo Picasso

  3. #373
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    Sorry, I didn't have my coffee, it was the DPIG card. I don't think I have the documentation anymore. I think it was removed when the DYNADIG box was added.
    "There are painters who transform the sun into a yellow spot, but there are others who, with the help of their art and their intelligence, transform a yellow spot into the sun." Pablo Picasso

  4. #374
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    Wasn't it the ADIG card, which was then replaced by the DOG card, which was then supplemented by the DYNADIG (The DOG card was still in there along with the DYNADIG)?

    I do have some vague memory of something called the DPIG card, but not enough memory scraps to put together enough of the history. Nor do I have any schematics of anything DPIG. I do have documentation on ADIG, DOGN, and DYNADIG.

    Ron

    Quote Originally Posted by laserist View Post
    Sorry, I didn't have my coffee, it was the DPIG card. I don't think I have the documentation anymore. I think it was removed when the DYNADIG box was added.

  5. #375
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    It looks like the ADIG was originally a 2 image version of the DPIG with pin 13 switching between the images. Later it was modified to allow the DYNADIG to be output in place of the ADIG image. The pdf I have of the modification with the 5012 switches doesn't make any sense to me. I think it's drawn wrong.
    "There are painters who transform the sun into a yellow spot, but there are others who, with the help of their art and their intelligence, transform a yellow spot into the sun." Pablo Picasso

  6. #376
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    Mar 2010
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    Exciting progress: A 351 data viewer which may be expanded into a 351 editor exists. Screen capture attached.

    I'll use the following 160 bit map in future posts to provide tracking of which bits in the 351 frame have been implemented in the viewer:

    11111111111111111111111111111111 <--- RYGB gains only currently implemented
    00000000000000000000000000000000
    00000000000000000000000000000000
    00000000000000000000000000000000
    00000000000000000000000000000000

    The data is playing back in real time, though no mechanism for synchronization to audio exists yet. Its currently using a circle as a placeholder cycloid for each color channel. It is already obvious that the circles varying size are indeed Laserium choreography.

    Next:
    I'm assuming the bits 5, 6, 7, 8 of the last byte in the 351 frame labeled scan enable simply work by cutting the beam output for that channel if low and enabling if high. Soon I'll be back with requests for recollections regarding the exact functioning / purpose of specific uncharted bits.
    Attached Thumbnails Attached Thumbnails 351_data_viewer_first_light.png  


  7. #377
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    Mar 2010
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    Turn Me On by The Tubes 351 data visualized:

    https://www.youtube.com/watch?v=8HsnAuwBGGs

    The synchronization between the audio and video has probably drifted slightly by the end of the song.

  8. #378
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    Mar 2010
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    How interesting and revealing. We are finally getting a real low down look at Laserock2 numbers.

    The Turn Me On number video I posted has the data lagging the audio a bit. After moving things about slightly, the correct synchronization jumps out.

    Turn Me On appears to use the scan pair enables and channel sizes (bytes 1, 2, 3, 4, and 20, and maybe something with offsets. I'm currently considering how to interpret offsets.

    PL question: Is there a code window or something to force a monospaced font?

    Here is a few frames from different parts of Turn Me On, where suddenly some or most of the bytes change value. I'm wondering if some of the changes in bytes could be something like left over initialization data recorded during different work sessions, and do not contribute to the choreography.

    changes in data throughout Turn Me On


    sizes 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20
    --------------------------------------------------------
    FFFFFFFF 00 00 45 4A 81 AF FF FF FF FF F2 FB FF FB FB 7F
    FF6EECFF 00 00 45 4A 80 AF FF FF FF FF F2 FB FF FB FB 7D
    73DEDECA 00 00 4D 59 80 70 D7 FF FE FF F2 FB FF 0F FB 6E
    FFDED4FF 00 00 4D 59 81 71 D8 FF FE FF F2 FB FF 0F FB 69
    FFB495FF 00 00 4D 5A 81 71 D8 FF FF FF F2 FB FF 0F FB 69
    FF5455FF 00 00 4D 59 80 70 D7 FF FE FF F2 FB FF 0F FB 69
    8EA7CF00 63 71 4D 59 80 70 D8 FF FE FF F2 FB FF 4F FB 60
    9AABDA00 AB B6 4D 59 80 70 D8 FF FE FF F2 FB FF 4F FB 62
    FFFF00FA 00 00 00 07 7D A8 FD FF FE FF FC FE 2B 93 FF FF

    The next number, Double Life, makes much use of bytes 5, 6, 12, 18. That is, master gain X and Y, offset gain and offset enables. I notice also that during much of this time the scan enables and sizes are off and zero. Questions, questions. Was it expected the laserist would override data control of beams and sizes with the lever switches?

    What do the offset enables actually enable? Position of beam by joystick with a joystick gain set by offset gain?

    How does master gain X and Y function? There is activity in these bytes when all the sizes are zero.

  9. #379
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    The offset enables turn on and off the offset for each scanner (BYGR) The offset gain set the amplitude of the offset. (There were multiplying DACs on the DOG card.) There were static and dynamic offsets. Static would be BGYR on the corners of a square or strung out in a line equally spaced. Dynamic would be dogloids, popcorn, and images. Offset gain was independent of the A/B bus image gains.

    The master and individual gains were in line. If either was at zero there's no output on the respective outputs. I assume they designed the system that way because the earliest machines used AD533 - 4 Quadrant Multipliers that needed to be trimmed via 3 trim pots to hit 0 & 10 volts. Having master and individual scanner gains made the system more likely to get to zero gain. If the 2QMM's that came later didn't reach zero - it was simply replaced.

    It's possible that the encoder was patched to do something with master gain tied to the music or a clock, but with the individual gains at zero there would be no image output. Offset gain had nothing to do with either joystick. The primary joystick function was entirely at the control of the laserist. Joystick z axis rotation needed to be enabled in the data originally, but at some point switches were added to test the IROT board and I did use them in shows after that. I also put a z axis rotation on the image override signal path on my machine in St. Louis.
    "There are painters who transform the sun into a yellow spot, but there are others who, with the help of their art and their intelligence, transform a yellow spot into the sun." Pablo Picasso

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